Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage.

The example of the Apollo Ⅱ moon launch is to illustrate that

A．minor mistakes can be ignored in achieving major objectives.
B．keeping one’s goal in mind helps in deciding which details can be overlooked.
C．adjustments are the key to the successful completion of any work.
D．failure is the mother of success.